Home / 12,570,078.20-18,855,117.30-11,214,903.65

Finding the Fourth Proportional to 12,570,078.20, 18,855,117.30 and 11,214,903.65

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Solution

The fourth proportional to 12,570,078.20, 18,855,117.30 and 11,214,903.65 is: 16,822,355.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,570,078.20 : 18,855,117.30 = 11,214,903.65 : x
  2. Step 2: Convert to fraction form
    12,570,078.20/18,855,117.30 = 11,214,903.65/x
  3. Step 3: Cross multiply
    12,570,078.20x = 18,855,117.30 × 11,214,903.65
  4. Step 4: Simplify right side
    12,570,078.20x = 211,458,323,828,948.16
  5. Step 5: Solve for x
    x = 211,458,323,828,948.16/12,570,078.20
  6. Step 6: Final answer
    x = 16,822,355.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.